| 氮化硼/碳纳米管对乙烯基聚二甲基硅氧烷导热性能影响的研究 |
| Influence of Borazon/Carbon Nanotube on Thermal Conductivity of Vinyl Polydimethylsiloxane |
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| DOI： |
| 中文关键词: 乙烯基聚二甲基硅氧烷 氮化硼 碳纳米管 填料网络 导热性能 热扩散性能 |
| 英文关键词: vinyl polydimethylsiloxane boron nitride carbon nanotube filler network thermal conductivity thermal diffusivity |
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| 中文摘要: |
| 分别采用氮化硼和氮化硼/碳纳米管（CNTs）复配物制备导热乙烯基聚二甲基硅氧烷（PDMS）材料，并对其导热性能进行研究。结果表明：随着氮化硼和CNTs用量的增大，材料的热导率和热扩散系数逐渐增大；氮化硼用量足够大时，能够形成导热通路进而促进填料网络的形成；CNTs在填料中将氮化硼粒子之间形成的平面结构连接起来，从而形成三维网络结构；填料越多，形成的导热网络结构越强；氮化硼在网络中起主要作用，CNTs起到辅助增强的作用。 |
| 英文摘要: |
| The thermally conductive vinyl polydimethylsiloxane （PDMS ）was prepared by using boron nitride（BN） and boron nitride/carbon nanotube（CNTs）as fillers，and its thermal conductivity was investigated. The results showed that with the addition level of BN and CNTs increasing，the thermal conductivity and the thermal diffusivity of materials increased. When BN content was large enough，filler network and thermally conductive path were formed. CNTs further connected the planar structures of the BN particles to form a three-dimensional network structure. The more the filler，the stronger the thermally conductive filler network formed. BN played a major role in the network，and CNTs played a supporting reinforcement role. |
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